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Secure Shell (SSH) and Telnet are the two most common remote management protocols. The configuration of Telnet is a common practice, but it is advisable to use SSH. The reason for this is that Telnet data is sent in plain text in contrast to SSH, which encrypts the data. Tools like wireshark and snort can be used to intercept unencrypted data over a LAN or extra network connection. [[Netcat]] - netcat has been around a long time and should be harmless to have on your system unless you really open things up like a fool.{{:CentOS_Linux_Distribution_Enable_Telnet}}== ssh - The Secure Shell ==[[Netcat]] - netcat has been around a long time and should be harmless to have on your system unless you really open things up like a fool.While Telnet was once widely used by administrators for remote management, it does not offer the security mechanisms like SSH, which establishes a secure connection from the host to the remote host. {{:CentOS_Linux_Distribution_Enable_Telnet}}